What was found
TAPPET BODIES BROKE AT THE TOP WHERE THEY RIDE ON THE CAM. PARTS OF TAPPETS THEN LODGED BETWEEN THE CAM AND CASE CAUSING A CRACK IN THE CASE, ALSO, DAMAGE TO PISTONS, RODS, CRANK, AND CAM, RESULTING ENGINE FAILURE.
- Difficulty date
- April 30, 1995
- Submitted
- March 26, 2000
- Operation
- General aviation
- Aircraft
- N4145H
- Make and model
- Mooney M20J
- Aircraft serial
- 240648
- Engine
- Lyc IO360A3B6
- System (JASC)
- 8520 · Reciprocating Engine Power Section
- Part
- Tappet
- Part number
- SL72877MJP
- Condition
- Failed
- Location
- Cam
- Stage of operation
- NR
- Nature of condition
- O
- Precautionary procedure
- K
As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.